THE GENERAL ELECTRIC COMPANY Patent applications |
Patent application number | Title | Published |
20120101394 | Personalized Fluid Assessment - A system and method of monitoring the fluid status of a patient. The system may include a patient monitor that receives blood pressure data. A first fluid model receives the blood pressure data, and a personalized fluid model is derived from the application of the blood pressure data to the first fluid model. An estimation of the patient's fluid status may be derived from the personalized fluid model. The method may include the steps of measuring a first blood pressure value, creating a personalized fluid model, measuring a second blood pressure value, applying the second blood pressure value to the personalized fluid model; and deriving an estimation of the fluid status of the patient. | 04-26-2012 |
20110245583 | INFANT WARMER APPARATUS AND METHOD - An infant warmer ( | 10-06-2011 |
20110040198 | Invasive Cardiology Digital Signal Amplifier and Acquisition Device - The digital signal amplifier and acquisition system includes at least one catheter input module (CIM) configured to receive, route and digitize incoming analog cardiac signals from a number of catheters, as well as outgoing stimulator pulses. A plurality of CIMs are mechanically stacked and electrically daisy-chained and coupled with a mounting. The mounting platter is clamped to the bedrail and provides a single digital output cable to the base. The system also includes an acquisition device and the aforementioned base, which is configured to collect, filter and distribute the acquired data. Lastly an analog output module receives filtered digital signals from the base and is configured to reconstruct analog representations of such filtered digital signals for outside devices. | 02-17-2011 |
20110009756 | METHOD, APPARATUS AND COMPUTER PROGRAM FOR NON-INVASIVE BLOOD PRESSURE MEASUREMENT - A method, apparatus and computer program product are disclosed for non-invasively determining blood pressure related parameters of a subject. A cuff attached to a subject is inflated to a target pressure which is such that normal blood pressure oscillation of the subject appears in an output signal of a pressure sensor monitoring the pressure of the cuff. The output signal of the pressure sensor is acquired for at most a predetermined time period, while the cuff is maintained substantially at the target pressure, thereby to obtain blood pressure waveform data for the subject, and the blood pressure related parameters are derived from the blood pressure waveform data. | 01-13-2011 |
20110009046 | VENTILATION PORT FOR APPARATUS HAVING ELECTRONICS - A ventilation port for an apparatus having electronics producing heat when energized is disclosed herein. The ventilation port includes a first frame having several ventilation openings separated by brackets and which ventilation openings allow an airflow for cooling the electronics. The ventilation port also includes a second frame having several ventilation openings separated by brackets and which ventilation openings allow the airflow for cooling the electronics and which second frame and first frame are arranged consecutively leaving a distance therebetween and which ventilation openings of the first frame and the brackets of the second frame are overlapping. | 01-13-2011 |
20100317982 | Module And Device For Discerning Therapeutic Signals from Noise in Physiological Data - A data acquisition module for use in monitoring a plurality of physiological signals is disclosed herein. The data acquisition module may include a first signal processing path for biopotential data, a second signal processing path for therapeutic event data, and a processing unit that receives and processes the data from the first and second signal processing paths. The data acquisition module may further compare identified likely therapeutic events in each of a plurality of psychological signals. | 12-16-2010 |
20100317931 | Method, Device and Computer Program Product for Monitoring a Subject - A method, device, and computer program product for monitoring the physiological state of a subject is disclosed. A first plurality of physiological signals are acquired from the subject and a second plurality of signal parameters are determined based on the first plurality of physiological signals. Relevant signal information is selected from among the signal information produced and at least one screen page is displayed at a time, thereby to make at least part of the signal information visible to a user. The signal information visible to the user on the at least one screen page may then be revised based on the selection and without user interaction, thereby to accelerate clinical decision-making and to diminish the possibility of undetected changes in the state of the subject. | 12-16-2010 |
20100294276 | Anesthetic Vaporizer Filling System - A system for the delivery of a liquid anesthetic agent to a sump of an anesthetic vaporizer includes a filler assembly rotatable about a pivot point. The filler assembly further includes a sump valve that controls fluid communication between the filler assembly and the sump. An adapter is coupled with the filler spout and includes a sealing surface that forms a seal against fluid communication between the anesthetic bottle and the adapter. The filler assembly, the filler spout, and the adapter are rotated about the pivot point along the rail. The rotation of the filler assembly, the filler spout, and the adapter about the pivot point opens the sump valve and the seal between the adapter and the anesthetic bottle. | 11-25-2010 |
20100280342 | MULTIPLE WAVELENGTH PHYSIOLOGICAL MEASURING APPARATUS, SENSOR AND INTERFACE UNIT FOR DETERMINATION OF BLOOD PARAMETERS - A measuring apparatus, a physiological sensor, and an interface unit for determining blood parameters of a subject are disclosed. The sensor comprises an emitter unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths and a detector unit configured to receive radiation generated by the emitter elements and transmitted through the tissue of the subject, wherein the detector unit is further configured to produce electric measurement signals indicative of absorption caused by the blood of the subject. In order to make the sensor compatible with a variety of different monitoring units, the sensor or the interface unit is provided with a memory that stores emitter activation information for at least a third plurality of wavelengths, thereby to enable a monitoring unit operably connectable to the physiological sensor to employ a combination of wavelengths selected from the third plurality of wavelengths, wherein the third plurality is equal to or smaller than the second plurality. | 11-04-2010 |
20100249616 | NIBP TARGET INFLATION PRESSURE AUTOMATION USING DERIVED SPO2 SIGNALS - A method and system for operating a non-invasive blood pressure monitor that utilizes an SpO | 09-30-2010 |
20100249539 | METHOD AND APPARATUS FOR DETERMINING AN INDICATOR OF AUTONOMIC NERVOUS SYSTEM STATE - A method and apparatus for determining an indicator of the level of nociception of a subject are disclosed. A parameter indicative of sympathetical activation in a subject is generated. To tackle inter-subject variability and to maintain low measurement delay with the help of reduced computational effort, changes in the parameter are monitored to detect a stable state of the parameter. Upon detection the stable state, a subject-specific scaling transformation intended to transform the parameter to an index on a predetermined index scale is determined. The scaling transformation is made dependent on at least one value detected for the parameter in connection with detection of the stable state. The scaling transformation is then applied to subsequent values of the parameter, thereby to transform the subsequent values to index values indicative of the level of nociception. | 09-30-2010 |
20100191118 | System and Method for Measuring the Instantaneous Period of a Quasi-Periodic Signal - A system for measuring the instantaneous period of a quasi-periodic signal includes a transducer that receives a quasi-periodic signal. A correlation computer cross correlates a template with the received quasi-periodic signal to produce a correlation signal. A peak detector identifies peaks of the correlation signal that exceed a threshold. A template creator averages the portions of the quasi-periodic signal that correspond to the identified peaks in the correlation signal to create a new template. A method of measuring the instantaneous period of a quasi-periodic signal includes determining an initial template, performing a cross-correlation between the initial template and a quasi-periodic signal and selecting portions of the signal that correspond to the peaks of the correlation signal. The selected portions are then averaged and another cross correlation is performed between the quasi-periodic signal and a template including the averaged selected portions. The instantaneous period is then measured from the correlation signal. | 07-29-2010 |
20100191117 | Method and Device for Controlling Transmission Power of an Active Transducer - A method of operating an ultrasound signal generator includes generating a stimulus signal and receiving a returned signal. The Signal to Noise Ratio (SNR) of the returned signal is computed. The SNR is compared to an optimal SNR range. A control signal is generated to control the transmission power of the stimulus signal. A new stimulus signal is generated at the new transmission power. A device for collecting and analyzing a quasi-periodic signal includes a SNR calculator that computes the SNR of a returned signal. A signal analysis selector selects between a first and a second signal analysis technique. A transmission power controller compares the computed SNR with an optimal SNR range for the selected technique and modifies the transmission power as a result of this comparison. | 07-29-2010 |
20100174202 | METHOD AND SYSTEM FOR COMBINING OSCILLOMETRIC BLOOD PRESSURE ENVELOPE DATA OBTAINED FROM DIFFERENT SIGNAL PROCESSING PATHS - A blood pressure measurement system that utilizes a non-invasive blood pressure (NIBP) monitor having a blood pressure cuff and pressure transducer. The measurement system provides a plurality of separate processing techniques that each receive a plurality of oscillometric waveform sample values generated using the pressure transducer. Each of the processing techniques separately generates a set of envelope points based upon the oscillometric data values. The sets of envelope points are appropriately scaled such that the sets of scaled envelope points are combined with each other to create a set of combined, scaled envelope points. Various different methods can be used to scale the sets of envelope points prior to the combination of the scaled envelope points. Based upon the combination of scaled envelope points, the blood pressure is calculated and displayed by the NIBP monitor. | 07-08-2010 |
20100169063 | System and Method of Modeling the Pharmacodynamic Effect to Drugs Delivered to a Patient - A system and method of modeling the pharmacodynamic effect of drugs delivered to a patient. The system includes a model database comprising a first drug interaction model and a second drug interaction model. A processing unit determines a first pharmacodynamic effect and a second pharmacodynamic effect and using a dominance rule to compare the first pharmacodynamic effect and a second pharmacodynamic effect to determine a dominant interaction model. A graphical display connected to the processing unit presents the determined dominant interaction model. The method includes the steps of obtaining first, second, and third drug concentrations, applying a first model that models a first pharmacodynamic effect, applying a second model that models a second pharmacodynamic effect and comparing the first pharmacodynamic effect to the second pharmacodynamic effect to determine which of the first model and the second model is the dominant pharmacodynamic model, and presenting the determined dominant pharmacodynamic model on a graphic display. | 07-01-2010 |
20100130834 | MEASUREMENT OF RESPONSIVENESS OF A SUBJECT - A method and apparatus for measuring the responsiveness of a subject are disclosed. Based on physiological signal data obtained from a subject, two indices of responsiveness are determined for the subject. The first index is indicative of the responsiveness of the subject to unintentional background stimulation affecting the subject, while the second index is indicative of the responsiveness of the subject to intentional stimulation. The determination of the two indices is such that the indices are commensurable to each other, thereby to allow evaluation of the state of the subject based on the relative magnitudes of the indices. | 05-27-2010 |
20100081942 | METHOD, ARRANGEMENT AND APPARATUS FOR MONITORING FLUID BALANCE STATUS OF A SUBJECT - A method and apparatus for monitoring fluid balance status of a subject are disclosed. A hemoglobin measure indicative of hemoglobin concentration in the blood of a subject and at least one physiological parameter responsive to blood volume changes in the subject are determined and concurrent behavior of the hemoglobin measure and the at least one physiological parameter is indicated to a user, thereby to give an indication of fluid balance status of the subject. The cause and/or reliability of the fluid balance status may also be indicated. | 04-01-2010 |
20100081118 | System and Method for Prescribing Patient Education - A system and method for prescribing education is disclosed herein. The system includes an electronic medical record database, a user input device, a content source, and an education engine. The education engine receives a patient physiological condition from the electronic medical records database, patient information from the user input device, and selects medical education content from the content source in order to create a prescribed education plan. A method of treating a patient with prescribed education is also disclosed herein. The method includes the steps of obtaining a patient understanding level, obtaining a patient literacy level, and obtaining a patient physiological condition. The patient physiological condition and understanding level are used select medical education content for the patient education. The patient literacy level is used to select a media for the patient education. A prescribed education plan is created that comprises the selected medical education content and the selected media. | 04-01-2010 |
20100042429 | SYSTEM AND METHOD FOR PROVIDING LOCALLY ADAPTIVE DECISION SUPPORT - A system and method for providing adaptive decision support is disclosed in further detail herein. An embodiment of this system includes a local outcome report that documents a medical outcome, a difference engine that compares the local outcome report to a national outcome report and generates a localized rule, and a rule engine that receives patient data and applies the localized rule from the difference engine to the patient data to produce a prescribed treatment. An embodiment of the method disclosed herein begins with receiving local patient data and outcome data. The outcome data is compared to national outcome data and a local rule is generated from the comparison. Next, the local patient and the outcome data is analyzed and a standard rule is generated based upon this analysis. The standard rule and the local rule are then applied to the local patient data to generate a prescribed treatment. | 02-18-2010 |
20090326342 | METHOD, ARRANGEMENT AND SENSOR FOR NON-INVASIVELY MONITORING BLOOD VOLUME OF A SUBJECT - A method, arrangement and sensor for monitoring blood status of a subject are disclosed. In-vivo measurement signals indicative of absorption caused by blood are acquired at a plurality of measurement wavelengths. Based on the in-vivo measurement signals, successive values are determined for a hemoglobin parameter indicative of the concentration of hemoglobin in the blood of the subject and the blood volume status of the subject is monitored based on the successive values. The monitoring may involve determining the absolute value of the blood volume or relative changes in the blood volume. In one embodiment, the absolute value of the blood volume is indicated continuously together with hemoglobin concentration and composition. | 12-31-2009 |
20090318997 | System and Method of Detecting and Diagnosing Pacing System Malfunctions - A method of diagnosing a malfunction of a pacing system includes the steps of receiving a biopotential signal, detecting a pacing system malfunction, detecting a cause of the malfunction, and displaying the detected malfunction and detected cause of the malfunction. A pacing system is also disclosed herein. The system includes an electrode array that receives a biopotential signal associated with the pacing system. A malfunction detector applies a malfunction logic to the biopotential signal to identify a pacing system malfunction and applies a morphology logic to the biopotential signal to identify a morphology of the biopotential signal. An output generator receives an indication of the identified pacing system malfunction and the identified cause of the malfunction and creates an output indicative of the identified pacing system malfunction and the identified cause. | 12-24-2009 |
20090312612 | METHOD, SYSTEM AND APPARATUS FOR MONITORING PATIENTS - A method, system and apparatus for monitoring a subject are disclosed. The subject is provided with a plurality of monitoring units including a fixed monitoring unit at a predetermined location and a mobile monitoring unit attached to the subject, wherein the fixed monitoring unit fails to have separate measurement elements attachable to the subject. First physiological data is acquired from the subject through the fixed monitoring unit and second physiological data through the mobile monitoring unit. A least one state index indicative of the state of the subject is produced based on first selected physiological data. The producing includes employing second selected physiological data to enhance the reliability of the at least one state index when both the first physiological data and the second physiological data are available from the subject, wherein the first selected physiological data belongs to one of the first and second physiological data and the second selected physiological data belongs to one of the first and second physiological data and fails to belong to the first selected physiological data. | 12-17-2009 |
20090281434 | PERSONALIZED FLUID ASSESSMENT - A system and method of monitoring the fluid status of a patient. The system may include a patient monitor that receives blood pressure data. A first fluid model receives the blood pressure data, and a personalized fluid model is derived from the application of the blood pressure data to the first fluid model. An estimation of the patient's fluid status may be derived from the personalized fluid model. The method may include the steps of measuring a first blood pressure value, creating a personalized fluid model, measuring a second blood pressure value, applying the second blood pressure value to the personalized fluid model; and deriving an estimation of the fluid status of the patient. | 11-12-2009 |
20090275853 | METHOD AND APPARATUS FOR MONITORING PHYSIOLOGICAL STATE OF A SUBJECT - A method and apparatus for monitoring physiological state of a subject is disclosed. Physiological signal data obtained from a subject is decomposed into a plurality of signal subentities, such as subbands of the overall frequency band of the signal data. A first measure indicative of the entropy of the respective signal subentity is determined for each of the subentities, thereby to obtain a corresponding plurality of first measures. An aggregate entropy measure is then calculated from the plurality of first measures and the aggregate entropy measure is employed to produce at least one state index indicative of a physiological state of the subject. The aggregate entropy measure typically represents a sum of the plurality of first measures. | 11-05-2009 |
20090266357 | RESPIRATORY CONNECTOR AND ARRANGEMENT FOR CONNECTING AN INSPIRATORY TUBE AND AN EXPIRATORY TUBE TO A MEDICAL APPARATUS - A respiratory connector for connecting an inspiratory tube and an expiratory tube to a coupling point of a medical apparatus is disclosed here. The respiratory connector includes a base element and two channels inside the base element, one of the channels is for an inspiratory flow and another is for an expiratory flow. The respiratory connector also includes a first sealable zone for sealing the base element with the coupling point and a second sealable zone at a distance from the first sealable zone for sealing with the coupling point. Both channels at least partly extend inside the base element between the first sealable zone and the second sealable zone. An arrangement for connecting an inspiratory tube and an expiratory tube to a medical apparatus is also disclosed. | 10-29-2009 |
20090262068 | SPACE EFFICENT SORTABLE TABLE - A sortable and space efficient graphical user interface and a system for the efficient display of sortable data are disclosed herein. The graphical user interface may include at least one column, at least one row and a data cell defined by the intersection of at least one column and at least one row. First and second data may be displayed in the data cell. A first header is associated with the first column and identifies the first data. A second header is associated with the first column and identifies the second data. In the system for displaying sortable data, a graphical user interface is displayed upon a graphical display. A table is displayed as at least a portion of the graphical user interface, the table having a column with a plurality of rows, each row displaying first and second data and a first header associated with a first data and a second header associated with the second data. | 10-22-2009 |
20090256710 | SYSTEM AND METHOD FOR MONITORING THE COGNITIVE ABILITY OF A PERSON - A system and method for monitoring the health of a remotely located person is disclosed herein. The system includes at least one electronic device. The electronic device includes a first sensor a processor and a transmitter. The system also includes a remote monitoring station that receives data from at least one electronic device and produces an evaluation of the person's health. | 10-15-2009 |
20090252306 | TELEMEDICINE SYSTEM AND METHOD - The telemedicine system and method includes an ubiquitous telephone and interactive voice response (IVR) system configured to interface with a hub, and in some embodiments, with medical sensor devices directly. The system and method allows an interested party to interface with the hub using a telephone. The system and method eliminates a user interface from the hub, and optionally includes a separate server. | 10-08-2009 |
20090247893 | METHOD AND APPARATUS FOR MEASURING RESPONSIVENESS OF A SUBJECT - The invention relates to a method and apparatus for measuring the responsiveness of a subject. Physiological signal data is obtained from a subject through at least one electrode attached to the skin of the subject and a first measure is derived from the physiological signal data, the first measure being indicative of signal energy in the physiological signal data on a frequency band where EMG activity appears. Recorded sequence of the first measure is subjected as input data to a morphological pattern extraction operation. The output data of the operation is indicative of presence of predetermined response waveforms in the input data and a measure of responsiveness is determined based on the output data. | 10-01-2009 |
20090209874 | EXTRAPOLATING ICA KNOWLEDGE FROM ONE EPOCH TO ANOTHER FOR IMPROVED FETAL ECG SEPARATION - A method of utilizing a maternal-fetal monitoring system to monitor the physiological properties of both a maternal patient and a fetus. A series of ECG electrodes are placed across the maternal patient's abdomen and receives ECG input waveforms across sixteen separate channels. The sixteen channels of information are processed using an ICA algorithm to generate a series of ICA output waveforms and a transfer matrix. Following the current epoch, the transfer matrix is applied to the input waveforms on a continuous basis. The conditioned input waveforms are displayed immediately following the first epoch and prior to the expiration of a subsequent epoch. The transfer matrix for the second epoch is combined with the transfer matrix for the first epoch to generate an updated transfer matrix. Various filtering operations on the transfer matrix coefficients may be used to find the updated transfer matrix before the end of the current epoch. | 08-20-2009 |
20090209868 | Adaptive Frequency Domain Filtering for Improved Non-Invasive Blood Pressure Estimation - A system for processing oscillometric data from a plurality of pressure steps to determine the blood pressure of a patient as disclosed herein. A heart rate monitor connected to the patient acquires the patient's heart rate. A time to frequency domain converter receives oscillometric data and converts the oscillometric data into the frequency domain. A harmonic frequency calculator is connected to the heart rate monitor and derives at least the heart rate fundamental frequency. A filter connected to the time to frequency domain converter and the harmonic frequency calculator that produces a filter frequency domain oscillometric signal. A reconstruction calculator receives the filtered frequency domain oscillometric signal and reconstructs a time domain oscillometric signal. A method of computing an oscillometric envelope for use in determining the blood pressure of a patient is also disclosed herein. | 08-20-2009 |
20090183737 | PULSE WIDTH MODULATED MEDICAL GAS CONCENTRATION CONTROL - A specified concentration of oxygen in a medical gas delivered to a patient by a gas delivery system can be achieved through the use of pulse width modulation control of the flows of one or more component medical gases. The flow of component medical gases can be controlled to improve the resolution and concentration range of medical gas delivered at low flow rates. A first flow of a first medical gas is provided and a second flow of a second medical gas is introduced to achieve a desired average medical gas concentration. When the second flow of the second medical gas is introduced, the first flow of the first medical gas is reduced to maintain a desired total medical gas flow rate. | 07-23-2009 |
20090177106 | METHOD AND APPARATUS FOR DISCERNING THERAPEUTIC SIGNALS FROM NOISE IN PHYSIOLOGICAL DATA - A data acquisition module for use in monitoring a plurality of physiological signals is disclosed herein. The data acquisition module may include a first signal processing path for biopotential data, a second signal processing path for therapeutic event data, and a processing unit that receives and processes the data from the first and second signal processing paths. The data acquisition module may further compare identified likely therapeutic events in each of a plurality of psychological signals. A method of identifying an electronic therapeutic event from a physiological signal is also disclosed herein the method may include steps of obtaining a plurality of psychological signals, removing any biopotential data from the physiological signals, using a first technique to identify likely therapeutic event data, comparing the identified likely therapeutic event data from each of the plurality of physiological signals and refining the identification of likely therapeutic events based on the comparison between each of the plurality of physiological signals. | 07-09-2009 |
20090177102 | SYSTEM, METHOD AND DEVICE FOR PREDICTING SUDDEN CARDIAC DEATH RISK - A system and method for predicting sudden cardiac death. The system includes a patient monitoring station, a Holter analysis workstation, and a hospital information network. The Holter analysis workstation being operative to apply a plurality of data analysis algorithms to create a sudden cardiac death report. The method applies a first data analysis technique and a second data analysis technique to electrocardiographic data to produce an indication of sudden cardiac death risk. | 07-09-2009 |
20090177101 | METHOD OF FETAL AND MATERNAL ECG IDENTIFICATION ACROSS MULTIPLE EPOCHS - A method of utilizing maternal-fetal monitoring system to monitor the physiological properties of both a maternal patient and a fetus. The method places a series of ECG electrodes across the maternal patient's abdomen and receives ECG input waveforms across a plurality of separate channels. The method processes the channels using an ICA algorithm to generate a series of ICA output waveforms. The ICA output waveforms are analyzed for each individual epoch to determine which of the channels include a maternal signal or a fetal signal source. Based upon the determination of which channel includes the fetal and maternal signals, further processing is carried out on the ICA output waveform on the identified channel to obtain physiological properties for the patient and the fetus. During the next epoch, the same signal processing occurs, such that the system can identify the fetal and maternal signals even as the fetal and maternal jump channels from one epoch to another. | 07-09-2009 |
20090138280 | MULTI-STEPPED DEFAULT DISPLAY PROTOCOLS - A multi-stepped default display protocol for diagnostic image review may be implemented using a computer readable medium coupled to a computer which is in turn coupled to a graphical display. The multi-stepped default display protocol may be stored on the computer readable medium from which the computer may read the multi-stepped default display protocol and display diagnostic images on the graphical display in accordance. The graphical display may present the diagnostic images according to the multi-stepped default display protocol by projecting a first display of medical information, providing an indication of at least one alternative display of medical information, receiving a selection of alternative medical information, and projecting the selected alternative display medical information. | 05-28-2009 |
20090048530 | MONITORING OF EPILEPTIFORM ACTIVITY - The invention relates to monitoring of epileptiform activity. In order to accomplish a mechanism with improved specificity to epileptiform activity and with the capability to provide a clinician enough information for selecting a precision-targeted drug at an early phase of a seizure, first and second indicators are derived from the brain wave signal data obtained from a subject, the indicators being respectively indicative of the level of underlying neuronal excitation and neuronal inhibition. Based on the first and second indicators, an indication of the level of at least one of the neuronal excitation and neuronal inhibition is given to an end-user. | 02-19-2009 |
20090024044 | DATA RECORDING FOR PATIENT STATUS ANALYSIS - A method and system for analyzing the status of a subject. A cordless recording device comprising a set of electrodes is attached on the forehead of the subject to collect brain wave signal data from the subject. Based on the brain wave signal data, status information indicative of the status of the subject during a measurement period is generated. A bioimpedance signal is further measured through two electrodes of the electrode set and heart rate data is derived from the bioimpedance signal. The heart rate data is utilized to enhance the quality of the status information, which is typically sleep state information. The invention also relates to a recording device attachable to the forehead of the subject. The recording may comprise a data memory for storing the data measured from the subject during the measurement period. | 01-22-2009 |
20090024011 | NON-INVASIVE DETERMINATION OF THE CONCENTRATION OF A BLOOD SUBSTANCE - In order to provide a non-invasive and continuous concentration measurement with the technology of standard pulse oximeters, an a priori relationship is created, through an in-vivo tissue model including a nominal estimate of a tissue parameter indicative of the concentration of a blood substance. The a priori relationship is indicative of the effect of tissue on in-vivo measurement signals at a plurality of wavelengths, the in-vivo measurement signals being indicative of absorption caused by pulsed arterial blood. In-vivo measurement signals are acquired from in-vivo tissue at the plurality of wavelengths and a specific value of the tissue parameter is determined based on the a priori relationship, the specific value being such that it yields the effect of the in-vivo tissue on the in-vivo measurement signals consistent for the plurality of wavelengths. The specific value then represents the concentration of the substance in the blood. | 01-22-2009 |
20080317672 | DETECTION OF ANOMALIES IN MEASUREMENT OF LEVEL OF HYPNOSIS - The invention relates to detection of anomalies related to a measurement of the hypnotic level of a subject. In order to detect when a measure indicative of the hypnotic level of a subject is anomalous either due to a medical reason or due to an interference, the measure is monitored and state information indicative of the activity of the autonomous nervous system of the subject and drug effect information indicative of the hypnotic drug effect in the subject are employed to check whether the measure fulfills a predetermined consistency condition requiring that the measure changes consistently with at least one of the drug effect information and the state information. An anomaly, indicative of an abnormal change in the measure, is detected when the measure fails to fulfill the predetermined consistency condition. | 12-25-2008 |
20080275347 | Stimulation Arrangement For Measurement Of Physiological Signal Reactivity - The invention relates to a method and apparatus for assessing the reactivity observable in a certain physiological signal, especially the EEG signal, of a subject. In order to obtain a compact measurement arrangement that enables reliable assessment of changes in the reactivity of the subject even during a long time period, a conventional monitoring device is provided with a stimulation module configured to supply stimuli to the subject through a measurement probe that the device uses to receive physiological signal data from the subject. The measurement probe may comprise, for example, an arm cuff through which the device monitors the blood pressure of the subject. | 11-06-2008 |
20080235058 | VITAL SIGN MONITOR UTILIZING HISTORIC PATIENT DATA - A vital sign monitoring system that can be used with multiple patients and utilizes historic patient data information for the patient to optimize the process of obtaining current vital sign measurements. Each patient is identified with a unique patient identification device that is automatically detected by the vital sign monitor. The vital sign monitor communicates with a medical records database and obtains historic patient data information and previously diagnosed characteristics for the patient identified by the patient identification device. The historic patient data information and previously diagnosed characteristics of the patient can be utilized by the vital sign monitor to set alarm limits for the vital sign measurements and automatically adjust the blood pressure estimation algorithm of the NIBP monitor. | 09-25-2008 |